Speaker



FIG. 1 is a isometric front view of a speaker showing our new design;

FIG. 2 is front elevational view thereof;

FIG. 3 is a right side elevational view thereof, the left side, top and bottom view being mirror images thereof; and,

FIG. 4 is a rear elevational view thereof.

The broken line showing of the planar backing, a volume control and cable connectors on FIG. 4 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a speaker, as shown and described. 